EP0952765A2 - Bande de contact électrique et de blindage contre les ondes électromagnétiques ainsi que le dispositif blindé correspondant - Google Patents

Bande de contact électrique et de blindage contre les ondes électromagnétiques ainsi que le dispositif blindé correspondant Download PDF

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Publication number
EP0952765A2
EP0952765A2 EP99107558A EP99107558A EP0952765A2 EP 0952765 A2 EP0952765 A2 EP 0952765A2 EP 99107558 A EP99107558 A EP 99107558A EP 99107558 A EP99107558 A EP 99107558A EP 0952765 A2 EP0952765 A2 EP 0952765A2
Authority
EP
European Patent Office
Prior art keywords
contact
contact strip
fingers
strip according
finger
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99107558A
Other languages
German (de)
English (en)
Other versions
EP0952765B1 (fr
EP0952765A3 (fr
Inventor
Walter Staniszewski
Ralf Häntsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kathrein SE
Original Assignee
Kathrein Werke KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kathrein Werke KG filed Critical Kathrein Werke KG
Publication of EP0952765A2 publication Critical patent/EP0952765A2/fr
Publication of EP0952765A3 publication Critical patent/EP0952765A3/fr
Application granted granted Critical
Publication of EP0952765B1 publication Critical patent/EP0952765B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0007—Casings
    • H05K9/0015—Gaskets or seals
    • H05K9/0016—Gaskets or seals having a spring contact

Definitions

  • the invention relates to contact strips for electrical contacting and / or to achieve a tight connection against high-frequency electromagnetic waves, in particular between a housing and a housing cover according to the preamble of claim 1 and an associated shielding arrangement.
  • a generic contact strip is known for example from DD 200 252. It is used for the electrically tight sealing of shielding elements, in particular shields and cassettes.
  • it consists of a sheet metal strip, which is provided transversely to the plane of extent of the sheet metal strip with embossed pyramid-shaped protruding spring elements, so that each spring element consists of a transverse to the plane of the contact strip laterally protruding tongue is formed.
  • the electrical contact strip consists of a spring metal strip with a plurality of resilient tongues which are formed by individual grooves which are introduced from one side transversely to the longitudinal direction of the contact spring element.
  • the individual springs and tongues are each folded in a cross-sectional plane transverse to the longitudinal direction of the contact strip in a roof or arc shape in order to produce a spring effect transversely to the contact strip plane.
  • molded wire parts, metal braid cords or plates or plastic elements filled with metal particles are also known as sealing elements.
  • all these electrical contact strips have production-related, function-related and / or cost-related disadvantages.
  • the object of the present invention is therefore to create an improved contact strip and an associated improved shielding arrangement.
  • the contact strip according to the invention is characterized in particular by the fact that it can only be produced by punching, without - as in the prior art - individual spring lamellae only having to be produced by generating a further embossing step.
  • the tongues are not necessarily produced by an additional embossing step.
  • the contact strip according to the invention is not only characterized by its extremely simple and inexpensive method of manufacture, but above all by the fact that it can be manufactured without any problems by the meter, since all spring elements of the contact strip are of the same design.
  • the contact strips according to the invention are characterized in that, in contrast to the prior art, no contact tongues are formed which are bent laterally about a bending line running in the longitudinal direction of the contact strip (i.e. are bent out laterally from the plane of the contact strip element, in order thereby to provide an elastic one Spring effect to produce the bending axis thus formed), but in that the spring elements can lie in the plane of the contact strip.
  • the contact and spring elements are realized in that they are finger-shaped, the fingertip or the area in the vicinity of the fingertip being designed as the actual contacting area. So there is no contact in an area across Contact strip level made as in the prior art.
  • the contact strip according to the invention can also be used as a partition itself when the partition is on their contact points is provided with a corresponding contact strip structure to form the contact fingers according to the invention.
  • a multiple ground connection for example between a printed circuit board and a housing, can also be realized with the spring structure according to the invention.
  • a shielding arrangement according to the invention is constructed using one of the contact strips according to the invention.
  • FIGS. 1a and 2 show a first exemplary embodiment of an electrical contact strip 1 according to the invention, which consists of a material strip with good electrical conductivity, which is produced in a corresponding stamping or cutting process using stamping or cutting means known per se.
  • the material that must have good electrical conductivity, in particular metal or a Metal alloy is chosen so that the desired electrical properties can be achieved.
  • the contact strip element 1 shown in FIG. 1 a in side view and in FIG. 2 in top view, B. is made of a metal strip or a metal strip, comprises a central longitudinal section 3, on which on the upper, that is, one longitudinal side 5 as well as on the lower or opposite longitudinal side 7 resilient contact fingers 11 are formed.
  • the height of the central longitudinal section 3 can be chosen in wide ranges in relation to the height of the projecting resilient contact fingers 11, as long as sufficient overall stability of the contact strip and elasticity of its contact fingers 11 is achieved.
  • the height of the central longitudinal section 3 is approximately 10 to 40%, preferably 20 to 25% of the total height of the contact strip 1, the z. B. a height of 4 to 10 mm, z. B. can have 6 to 8 mm.
  • the contact fingers 11 lie in the contact strip plane E and are oriented at an angle to the longitudinal direction 13 of the contact strip.
  • the angle of inclination ⁇ between the alignment of the respective contact finger 11 with the longitudinal direction 13 of the contact strip can be chosen in a wide range. In certain applications, a transverse orientation of 90 ° transverse to the longitudinal direction 13 of the contact strip can still be achieved to lead.
  • the aforementioned inclined orientation is preferably selected, the angle ⁇ being intended to be greater than 0 ° and less than 90 °, preferably between 10 ° to 80 °, in particular 20 ° to 70 °. In the exemplary embodiment shown, an angular range from 20 ° to 60 °, in particular around 30 ° to 40 °, is preferred.
  • the lower and opposite lower contact fingers 11 are oriented inclined in the same orientation.
  • the upper and lower contact fingers it would also be possible for the upper and lower contact fingers to be oriented in opposite directions, that is to say that both the upper and lower contact fingers (with the same size, but oppositely oriented angle ⁇ ) are generally parallel to one another.
  • an extension groove 23 is in each case on the side 21 of the contact finger 11 enclosing the acute angle ⁇ in the material area of the central longitudinal section of the Introduced contact strip.
  • the electrical contact strip formed in this way is only produced by punching or another cutting process, without an additional stamping process being necessary (even if the fingers are also stamped to a certain extent - which will be discussed later) - subjected can be).
  • the resilient contact fingers 11 formed in this way can then be deformed about a bending axis 27 lying transversely to the contact strip plane E and thus transversely to the drawing plane E, which is indicated in the region of the base point 19 in FIG. 1a.
  • the bending axis 27 is perpendicular to the contact strip plane E.
  • Figure 1b shows that the contact fingers can also be curved.
  • the center of curvature faces the median strip.
  • Figure 1c also shows that the contact finger edges do not necessarily have to run parallel, but that the width of the contact fingers can change from their base to their free end, for example, slightly taper.
  • FIG. 3 shows a first exemplary embodiment for the use of the electrical contact strip.
  • the housing and cover like the contact strip, consist of electrically conductive material, in particular electrically highly conductive material
  • the contact strip 1 In this holding groove 35, the contact strip 1 must now only be inserted in the appropriate length.
  • the width of the groove can be larger than the thickness of the contact spring element, since this is not decisive for its function.
  • simple measures e.g. B.
  • the depth of the groove is less than the height of the contact strip 1, so that the resilient contact fingers 11 protrude above the holding groove 35 at the upper end via the groove.
  • the resilient contact fingers with their leading free finger end 11 'both in the groove bed of the holding groove 35 and with their finger ends 11 'of the overhead contact fingers 11 bear against the underside of the cover 31 under spring pretension, and the contact area between the spring finger and the housing as well as between the spring finger and the cover is small due to the small thickness of the contact strip and the punching is extremely good electrical contact realized by a kind of notching movement.
  • the small contact area results in the aforementioned high surface pressure, the finger ends 11 'carrying out a slight sliding movement during the elastic pretensioning movement of the contact fingers and possibly even penetrating corrosion or other foreign layers.
  • the contact element according to the invention and its contact spring elements 11 are characterized in particular by the fact that the contact direction is not oriented transversely to the contact spring element plane E, but lies in the plane E of the contact spring elements 11, namely in the direct extension of the individual contact fingers 11.
  • FIG. 4 it is only shown schematically that on same way, an electrical contact not only between the housing 29 and a cover 31, as shown in Figure 3, but also between a housing 29 and the ground or connection points of a circuit board 39 can be made.
  • the circuit board 39 can, for. B. can be fixed with a few screws on the housing. The space enclosed in this way between the housing and the printed circuit board is shielded against high-frequency electromagnetic waves.
  • a contact strip 1 can simultaneously perform the function of a wall or partition.
  • the central longitudinal section 3 is designed to be comparatively high, the wall section formed in this way being provided on the top and / or underside with the contact finger structure in accordance with the explained contact strip 1.
  • a closed housing 29 is shown in cross section, in which a receiving groove 35 for a printed circuit board 39 is formed on the opposite walls 29 ', which can be inserted into these receiving grooves 35 transversely to the plane of the drawing.
  • the circuit board 39 is held and electrically contacted by two contact strips 1 inserted into the opposite slots 41. Again, the total height of the groove and the slots 41 is smaller than the total height of the contact strips 1 plus the thickness of the printed circuit board 39 in the uncontacted state.
  • the circuit board 39 is inserted so that it 2 is pushed onto the contacting strip 1 from left to right in the representation according to FIG. 2, that is to say is pushed in in the direction in which the contacting fingers 11 are inclined.
  • FIG. 8 it is shown in FIG. 8 in a cross section transverse to the longitudinal direction 13 of the contact strip 1 that, for example on the lower longitudinal side 7, the resilient contact fingers 11 provided there are alternately slightly to the left or to the right.
  • the contact strip 1 is clamped in use between its top and bottom, that is, between the upward-pointing finger ends 11 'and the downward-pointing, alternately slightly offset finger ends 11' between two components to be contacted or shielded , wherein the contact fingers 11 can nevertheless be elastically bent completely or at least with one component in the installation case, in each case about a pretensioning axis oriented transversely to the contact strip plane E.
  • the contact strip extension plane coincides, for example, with the central contact strip section
  • the contact fingers 11 on top are also alternately, in any case every second finger to the contact finger 11 in between, slightly differently flared so that an X-shaped structure results in the cross section.
  • FIG. 10 a modification to FIG. 1 is shown to the extent that the individual contact fingers 11 are oriented at right angles to the contact strip plane E in relation to the longitudinal direction of the contact strip.
  • the central web 3 is also slightly elastically deformed when the components to be contacted are joined, which is shown oversized in FIG. 13b.
  • the elastic deformation enables the effective distance between the opposing contact surfaces 11 'of two differently oriented contact fingers 11 to be at least slightly reduced when the components to be contacted are joined together.
  • the slightly deformed zigzag or undulating central part 3 is already preformed slightly zigzag or undulating (that is, for example, punched out).
  • the contact fingers have a multi-link design and comprise contact finger sections 14 which protrude laterally opposite one another on the central web 3, at the outer end of which one or two contact finger end sections 11a are preferably located in the contact strip plane E. .
  • This contact strip can also only be produced by punching.
  • the contact fingers 11 extend from the tapered transition to the contact finger section 14 back in the direction of the central web 3, specifically with respect to the side arm in an inclined orientation (angular).
  • This exemplary embodiment can be used if, in addition to a circumferential groove or a space for inserting the central longitudinal section 3, the components to be contacted additionally have groove-shaped pockets 44 which are provided at least to a sufficient depth and are, in particular, B-wide in relation to the spacing the contact fingers 11 are adapted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
EP99107558A 1998-04-23 1999-04-15 Bande de contact électrique et de blindage contre les ondes électromagnétiques ainsi que le dispositif blindé correspondant Expired - Lifetime EP0952765B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19818285A DE19818285C2 (de) 1998-04-23 1998-04-23 Kontaktstreifen zum elektrischen Kontaktieren und/oder zur Erzielung einer gegen hochfrequente elektromagnetische Wellen dichten Verbindung sowie zugehörige Abschirmanordnung
DE19818285 1998-04-23

Publications (3)

Publication Number Publication Date
EP0952765A2 true EP0952765A2 (fr) 1999-10-27
EP0952765A3 EP0952765A3 (fr) 2000-07-05
EP0952765B1 EP0952765B1 (fr) 2003-06-25

Family

ID=7865638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107558A Expired - Lifetime EP0952765B1 (fr) 1998-04-23 1999-04-15 Bande de contact électrique et de blindage contre les ondes électromagnétiques ainsi que le dispositif blindé correspondant

Country Status (2)

Country Link
EP (1) EP0952765B1 (fr)
DE (2) DE19818285C2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1231827A1 (fr) * 2001-02-09 2002-08-14 LK Engineering A/S Bande de contact avec des projections repliées et méthode de fabrication
EP1264523A1 (fr) * 2000-03-15 2002-12-11 Arthur Adolph Kurz Construction de contacteur a blindage
EP1349441A1 (fr) * 2002-03-25 2003-10-01 Fujitsu Siemens Computers GmbH Elément de contact pour blindage électromagnétique
WO2004084601A1 (fr) * 2003-03-18 2004-09-30 Fujitsu Limited Structure de connexion
EP2802200A2 (fr) * 2013-05-07 2014-11-12 KATHREIN-Werke KG Boîtier avec blindage contre les hautes fréquences, en particulier prise d'antenne avec blindage contre les hautes fréquences
WO2015180820A1 (fr) * 2014-05-27 2015-12-03 Kathrein-Werke Kg Boîtier blindé contre les hautes fréquences, en particulier boîtier de filtre blindé contre les hautes fréquences

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986007497A1 (fr) * 1985-06-14 1986-12-18 Telefonaktiebolaget Lm Ericsson Systeme de mise a la terre pour armoire contenant un appareil
EP0563673A1 (fr) * 1992-03-31 1993-10-06 Siemens Aktiengesellschaft Plaque ressort pour établir un contact entre deux parties de boîtier de grande surface
EP0757514A1 (fr) * 1995-08-02 1997-02-05 BOPLA GEHÄUSE SYSTEME GmbH Boîte métallique pour composants électriques ou électroniques

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD200252A1 (de) * 1981-09-11 1983-04-06 Klaus Reeder Kontaktvorrichtung zum elektrisch dichten verschliessen von schirmelementen
DE3523770A1 (de) * 1985-07-03 1987-01-08 Bosch Gmbh Robert Hochfrequenzdichtes gehaeuse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986007497A1 (fr) * 1985-06-14 1986-12-18 Telefonaktiebolaget Lm Ericsson Systeme de mise a la terre pour armoire contenant un appareil
EP0563673A1 (fr) * 1992-03-31 1993-10-06 Siemens Aktiengesellschaft Plaque ressort pour établir un contact entre deux parties de boîtier de grande surface
EP0757514A1 (fr) * 1995-08-02 1997-02-05 BOPLA GEHÄUSE SYSTEME GmbH Boîte métallique pour composants électriques ou électroniques

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1264523A1 (fr) * 2000-03-15 2002-12-11 Arthur Adolph Kurz Construction de contacteur a blindage
EP1264523A4 (fr) * 2000-03-15 2004-09-29 Arthur Adolph Kurz Construction de contacteur a blindage
EP1231827A1 (fr) * 2001-02-09 2002-08-14 LK Engineering A/S Bande de contact avec des projections repliées et méthode de fabrication
EP1349441A1 (fr) * 2002-03-25 2003-10-01 Fujitsu Siemens Computers GmbH Elément de contact pour blindage électromagnétique
WO2004084601A1 (fr) * 2003-03-18 2004-09-30 Fujitsu Limited Structure de connexion
US7435915B2 (en) 2003-03-18 2008-10-14 Fujitsu Limited Joining structure
EP2802200A2 (fr) * 2013-05-07 2014-11-12 KATHREIN-Werke KG Boîtier avec blindage contre les hautes fréquences, en particulier prise d'antenne avec blindage contre les hautes fréquences
EP2802200A3 (fr) * 2013-05-07 2015-01-07 KATHREIN-Werke KG Boîtier avec blindage contre les hautes fréquences, en particulier prise d'antenne avec blindage contre les hautes fréquences
WO2015180820A1 (fr) * 2014-05-27 2015-12-03 Kathrein-Werke Kg Boîtier blindé contre les hautes fréquences, en particulier boîtier de filtre blindé contre les hautes fréquences
US10090573B2 (en) 2014-05-27 2018-10-02 Kathrein-Werke Kg High-frequency shielded housing, in particular high-frequency shielded filter housing

Also Published As

Publication number Publication date
DE19818285C2 (de) 2001-10-31
DE59906055D1 (de) 2003-07-31
DE19818285A1 (de) 1999-11-04
EP0952765B1 (fr) 2003-06-25
EP0952765A3 (fr) 2000-07-05

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